It was a generalized assertion, Bilderberg absolutely isn't an 'American' conference per se.
Let me make my points clear; ORFwallahs are the de facto representatives of the Indian govt and that is precisely why I mentioned the generous amount of funds they have been receiving from the govt - they are funding these think tanks for that reason only. There is also this other think tank (being managed by the Doval family) that has been receiving govt endorsements for quite a while now.
The incumbent govt is not 'isolationist' like their predecessors. There was this interesting article on some Indian media that claimed that Modi and co were growing increasingly agonized with the way their diplomats were being cornered by goras at the WTO, the IMF etc because the foreign diplomats collaborated through their think tank types behind the scenes, had files ready on the personal lives of all the GoI representatives at table and ganged up on the Indian diplomats at crucial negotiations (concerning tariffs, arms deals etc) - at times, outnumbering them by 10:1 because the govt used to send smaller delegations and a general apathy towards multilateral meets was prevalent. The incumbent gormint had enough of all that and decided to 'collaborate' more with the foreign govt backed think tanks and their official/semi-official representatives behind the scene to prevent 'undesired' outcomes at bilateral/trilateral/multilateral meets. Think Arvind Virmani has written extensively on this policy shift, both through his columns and SM posts.